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  <pre class="prettyprint lang-js"><span id='Ext-menu-Menu'>/**
</span> * @class Ext.menu.Menu
 * @extends Ext.Container
 * &lt;p&gt;A menu object.  This is the container to which you may add menu items.  Menu can also serve as a base class
 * when you want a specialized menu based off of another component (like {@link Ext.menu.DateMenu} for example).&lt;/p&gt;
 * &lt;p&gt;Menus may contain either {@link Ext.menu.Item menu items}, or general {@link Ext.Component Component}s.&lt;/p&gt;
 * &lt;p&gt;To make a contained general {@link Ext.Component Component} line up with other {@link Ext.menu.Item menu items}
 * specify &lt;tt&gt;iconCls: 'no-icon'&lt;/tt&gt;.  This reserves a space for an icon, and indents the Component in line
 * with the other menu items.  See {@link Ext.form.ComboBox}.{@link Ext.form.ComboBox#getListParent getListParent}
 * for an example.&lt;/p&gt;
 * &lt;p&gt;By default, Menus are absolutely positioned, floating Components. By configuring a Menu with
 * &lt;b&gt;&lt;tt&gt;{@link #floating}:false&lt;/tt&gt;&lt;/b&gt;, a Menu may be used as child of a Container.&lt;/p&gt;
 *
 * @xtype menu
 */
Ext.menu.Menu = Ext.extend(Ext.Container, {
<span id='Ext-menu-Menu-cfg-defaults'>    /**
</span>     * @cfg {Object} defaults
     * A config object that will be applied to all items added to this container either via the {@link #items}
     * config or via the {@link #add} method.  The defaults config can contain any number of
     * name/value property pairs to be added to each item, and should be valid for the types of items
     * being added to the menu.
     */
<span id='Ext-menu-Menu-cfg-items'>    /**
</span>     * @cfg {Mixed} items
     * An array of items to be added to this menu. Menus may contain either {@link Ext.menu.Item menu items},
     * or general {@link Ext.Component Component}s.
     */
<span id='Ext-menu-Menu-cfg-minWidth'>    /**
</span>     * @cfg {Number} minWidth The minimum width of the menu in pixels (defaults to 120)
     */
    minWidth : 120,
<span id='Ext-menu-Menu-cfg-shadow'>    /**
</span>     * @cfg {Boolean/String} shadow True or 'sides' for the default effect, 'frame' for 4-way shadow, and 'drop'
     * for bottom-right shadow (defaults to 'sides')
     */
    shadow : 'sides',
<span id='Ext-menu-Menu-cfg-subMenuAlign'>    /**
</span>     * @cfg {String} subMenuAlign The {@link Ext.Element#alignTo} anchor position value to use for submenus of
     * this menu (defaults to 'tl-tr?')
     */
    subMenuAlign : 'tl-tr?',
<span id='Ext-menu-Menu-cfg-defaultAlign'>    /**
</span>     * @cfg {String} defaultAlign The default {@link Ext.Element#alignTo} anchor position value for this menu
     * relative to its element of origin (defaults to 'tl-bl?')
     */
    defaultAlign : 'tl-bl?',
<span id='Ext-menu-Menu-cfg-allowOtherMenus'>    /**
</span>     * @cfg {Boolean} allowOtherMenus True to allow multiple menus to be displayed at the same time (defaults to false)
     */
    allowOtherMenus : false,
<span id='Ext-menu-Menu-cfg-ignoreParentClicks'>    /**
</span>     * @cfg {Boolean} ignoreParentClicks True to ignore clicks on any item in this menu that is a parent item (displays
     * a submenu) so that the submenu is not dismissed when clicking the parent item (defaults to false).
     */
    ignoreParentClicks : false,
<span id='Ext-menu-Menu-cfg-enableScrolling'>    /**
</span>     * @cfg {Boolean} enableScrolling True to allow the menu container to have scroller controls if the menu is too long (defaults to true).
     */
    enableScrolling : true,
<span id='Ext-menu-Menu-cfg-maxHeight'>    /**
</span>     * @cfg {Number} maxHeight The maximum height of the menu. Only applies when enableScrolling is set to True (defaults to null).
     */
    maxHeight : null,
<span id='Ext-menu-Menu-cfg-scrollIncrement'>    /**
</span>     * @cfg {Number} scrollIncrement The amount to scroll the menu. Only applies when enableScrolling is set to True (defaults to 24).
     */
    scrollIncrement : 24,
<span id='Ext-menu-Menu-cfg-showSeparator'>    /**
</span>     * @cfg {Boolean} showSeparator True to show the icon separator. (defaults to true).
     */
    showSeparator : true,
<span id='Ext-menu-Menu-cfg-defaultOffsets'>    /**
</span>     * @cfg {Array} defaultOffsets An array specifying the [x, y] offset in pixels by which to
     * change the default Menu popup position after aligning according to the {@link #defaultAlign}
     * configuration. Defaults to &lt;tt&gt;[0, 0]&lt;/tt&gt;.
     */
    defaultOffsets : [0, 0],

<span id='Ext-menu-Menu-cfg-plain'>    /**
</span>     * @cfg {Boolean} plain
     * True to remove the incised line down the left side of the menu. Defaults to &lt;tt&gt;false&lt;/tt&gt;.
     */
    plain : false,

<span id='Ext-menu-Menu-cfg-floating'>    /**
</span>     * @cfg {Boolean} floating
     * &lt;p&gt;By default, a Menu configured as &lt;b&gt;&lt;code&gt;floating:true&lt;/code&gt;&lt;/b&gt;
     * will be rendered as an {@link Ext.Layer} (an absolutely positioned,
     * floating Component with zindex=15000).
     * If configured as &lt;b&gt;&lt;code&gt;floating:false&lt;/code&gt;&lt;/b&gt;, the Menu may be
     * used as child item of another Container instead of a free-floating
     * {@link Ext.Layer Layer}.
     */
    floating : true,


<span id='Ext-menu-Menu-cfg-zIndex'>    /**
</span>     * @cfg {Number} zIndex
     * zIndex to use when the menu is floating.
     */
    zIndex: 15000,

<span id='Ext-menu-Menu-property-hidden'>    // private
</span>    hidden : true,

<span id='Ext-menu-Menu-cfg-layout'>    /**
</span>     * @cfg {String/Object} layout
     * This class assigns a default layout (&lt;code&gt;layout:'&lt;b&gt;menu&lt;/b&gt;'&lt;/code&gt;).
     * Developers &lt;i&gt;may&lt;/i&gt; override this configuration option if another layout is required.
     * See {@link Ext.Container#layout} for additional information.
     */
    layout : 'menu',
<span id='Ext-menu-Menu-property-scrollerHeight'><span id='Ext-menu-Menu-cfg-hideMode'>    hideMode : 'offsets',    // Important for laying out Components
</span></span>    scrollerHeight : 8,
<span id='Ext-menu-Menu-cfg-defaultType'><span id='Ext-menu-Menu-property-autoLayout'>    autoLayout : true,       // Provided for backwards compat
</span></span>    defaultType : 'menuitem',
<span id='Ext-menu-Menu-cfg-bufferResize'>    bufferResize : false,
</span>
<span id='Ext-menu-Menu-method-initComponent'>    initComponent : function(){
</span>        if(Ext.isArray(this.initialConfig)){
            Ext.apply(this, {items:this.initialConfig});
        }
        this.addEvents(
<span id='Ext-menu-Menu-event-click'>            /**
</span>             * @event click
             * Fires when this menu is clicked (or when the enter key is pressed while it is active)
             * @param {Ext.menu.Menu} this
            * @param {Ext.menu.Item} menuItem The menu item that was clicked
             * @param {Ext.EventObject} e
             */
            'click',
<span id='Ext-menu-Menu-event-mouseover'>            /**
</span>             * @event mouseover
             * Fires when the mouse is hovering over this menu
             * @param {Ext.menu.Menu} this
             * @param {Ext.EventObject} e
             * @param {Ext.menu.Item} menuItem The menu item that was clicked
             */
            'mouseover',
<span id='Ext-menu-Menu-event-mouseout'>            /**
</span>             * @event mouseout
             * Fires when the mouse exits this menu
             * @param {Ext.menu.Menu} this
             * @param {Ext.EventObject} e
             * @param {Ext.menu.Item} menuItem The menu item that was clicked
             */
            'mouseout',
<span id='Ext-menu-Menu-event-itemclick'>            /**
</span>             * @event itemclick
             * Fires when a menu item contained in this menu is clicked
             * @param {Ext.menu.BaseItem} baseItem The BaseItem that was clicked
             * @param {Ext.EventObject} e
             */
            'itemclick'
        );
        Ext.menu.MenuMgr.register(this);
        if(this.floating){
            Ext.EventManager.onWindowResize(this.hide, this);
        }else{
            if(this.initialConfig.hidden !== false){
                this.hidden = false;
            }
            this.internalDefaults = {hideOnClick: false};
        }
        Ext.menu.Menu.superclass.initComponent.call(this);
        if(this.autoLayout){
            var fn = this.doLayout.createDelegate(this, []);
            this.on({
                add: fn,
                remove: fn
            });
        }
    },

<span id='Ext-menu-Menu-method-getLayoutTarget'>    //private
</span>    getLayoutTarget : function() {
        return this.ul;
    },

<span id='Ext-menu-Menu-method-onRender'>    // private
</span>    onRender : function(ct, position){
        if(!ct){
            ct = Ext.getBody();
        }

        var dh = {
            id: this.getId(),
            cls: 'x-menu ' + ((this.floating) ? 'x-menu-floating x-layer ' : '') + (this.cls || '') + (this.plain ? ' x-menu-plain' : '') + (this.showSeparator ? '' : ' x-menu-nosep'),
            style: this.style,
            cn: [
                {tag: 'a', cls: 'x-menu-focus', href: '#', onclick: 'return false;', tabIndex: '-1'},
                {tag: 'ul', cls: 'x-menu-list'}
            ]
        };
        if(this.floating){
            this.el = new Ext.Layer({
                shadow: this.shadow,
                dh: dh,
                constrain: false,
                parentEl: ct,
                zindex: this.zIndex
            });
        }else{
            this.el = ct.createChild(dh);
        }
        Ext.menu.Menu.superclass.onRender.call(this, ct, position);

        if(!this.keyNav){
            this.keyNav = new Ext.menu.MenuNav(this);
        }
        // generic focus element
        this.focusEl = this.el.child('a.x-menu-focus');
        this.ul = this.el.child('ul.x-menu-list');
        this.mon(this.ul, {
            scope: this,
            click: this.onClick,
            mouseover: this.onMouseOver,
            mouseout: this.onMouseOut
        });
        if(this.enableScrolling){
            this.mon(this.el, {
                scope: this,
                delegate: '.x-menu-scroller',
                click: this.onScroll,
                mouseover: this.deactivateActive
            });
        }
    },

<span id='Ext-menu-Menu-method-findTargetItem'>    // private
</span>    findTargetItem : function(e){
        var t = e.getTarget('.x-menu-list-item', this.ul, true);
        if(t &amp;&amp; t.menuItemId){
            return this.items.get(t.menuItemId);
        }
    },

<span id='Ext-menu-Menu-method-onClick'>    // private
</span>    onClick : function(e){
        var t = this.findTargetItem(e);
        if(t){
            if(t.isFormField){
                this.setActiveItem(t);
            }else if(t instanceof Ext.menu.BaseItem){
                if(t.menu &amp;&amp; this.ignoreParentClicks){
                    t.expandMenu();
                    e.preventDefault();
                }else if(t.onClick){
                    t.onClick(e);
                    this.fireEvent('click', this, t, e);
                }
            }
        }
    },

<span id='Ext-menu-Menu-method-setActiveItem'>    // private
</span>    setActiveItem : function(item, autoExpand){
        if(item != this.activeItem){
            this.deactivateActive();
            if((this.activeItem = item).isFormField){
                item.focus();
            }else{
                item.activate(autoExpand);
            }
        }else if(autoExpand){
            item.expandMenu();
        }
    },

<span id='Ext-menu-Menu-method-deactivateActive'>    deactivateActive : function(){
</span>        var a = this.activeItem;
        if(a){
            if(a.isFormField){
                //Fields cannot deactivate, but Combos must collapse
                if(a.collapse){
                    a.collapse();
                }
            }else{
                a.deactivate();
            }
            delete this.activeItem;
        }
    },

<span id='Ext-menu-Menu-method-tryActivate'>    // private
</span>    tryActivate : function(start, step){
        var items = this.items;
        for(var i = start, len = items.length; i &gt;= 0 &amp;&amp; i &lt; len; i+= step){
            var item = items.get(i);
            if(item.isVisible() &amp;&amp; !item.disabled &amp;&amp; (item.canActivate || item.isFormField)){
                this.setActiveItem(item, false);
                return item;
            }
        }
        return false;
    },

<span id='Ext-menu-Menu-method-onMouseOver'>    // private
</span>    onMouseOver : function(e){
        var t = this.findTargetItem(e);
        if(t){
            if(t.canActivate &amp;&amp; !t.disabled){
                this.setActiveItem(t, true);
            }
        }
        this.over = true;
        this.fireEvent('mouseover', this, e, t);
    },

<span id='Ext-menu-Menu-method-onMouseOut'>    // private
</span>    onMouseOut : function(e){
        var t = this.findTargetItem(e);
        if(t){
            if(t == this.activeItem &amp;&amp; t.shouldDeactivate &amp;&amp; t.shouldDeactivate(e)){
                this.activeItem.deactivate();
                delete this.activeItem;
            }
        }
        this.over = false;
        this.fireEvent('mouseout', this, e, t);
    },

<span id='Ext-menu-Menu-method-onScroll'>    // private
</span>    onScroll : function(e, t){
        if(e){
            e.stopEvent();
        }
        var ul = this.ul.dom, top = Ext.fly(t).is('.x-menu-scroller-top');
        ul.scrollTop += this.scrollIncrement * (top ? -1 : 1);
        if(top ? ul.scrollTop &lt;= 0 : ul.scrollTop + this.activeMax &gt;= ul.scrollHeight){
           this.onScrollerOut(null, t);
        }
    },

<span id='Ext-menu-Menu-method-onScrollerIn'>    // private
</span>    onScrollerIn : function(e, t){
        var ul = this.ul.dom, top = Ext.fly(t).is('.x-menu-scroller-top');
        if(top ? ul.scrollTop &gt; 0 : ul.scrollTop + this.activeMax &lt; ul.scrollHeight){
            Ext.fly(t).addClass(['x-menu-item-active', 'x-menu-scroller-active']);
        }
    },

<span id='Ext-menu-Menu-method-onScrollerOut'>    // private
</span>    onScrollerOut : function(e, t){
        Ext.fly(t).removeClass(['x-menu-item-active', 'x-menu-scroller-active']);
    },

<span id='Ext-menu-Menu-method-show'>    /**
</span>     * If &lt;code&gt;{@link #floating}=true&lt;/code&gt;, shows this menu relative to
     * another element using {@link #showat}, otherwise uses {@link Ext.Component#show}.
     * @param {Mixed} element The element to align to
     * @param {String} position (optional) The {@link Ext.Element#alignTo} anchor position to use in aligning to
     * the element (defaults to this.defaultAlign)
     * @param {Ext.menu.Menu} parentMenu (optional) This menu's parent menu, if applicable (defaults to undefined)
     */
    show : function(el, pos, parentMenu){
        if(this.floating){
            this.parentMenu = parentMenu;
            if(!this.el){
                this.render();
                this.doLayout(false, true);
            }
            this.showAt(this.el.getAlignToXY(el, pos || this.defaultAlign, this.defaultOffsets), parentMenu);
        }else{
            Ext.menu.Menu.superclass.show.call(this);
        }
    },

<span id='Ext-menu-Menu-method-showAt'>    /**
</span>     * Displays this menu at a specific xy position and fires the 'show' event if a
     * handler for the 'beforeshow' event does not return false cancelling the operation.
     * @param {Array} xyPosition Contains X &amp; Y [x, y] values for the position at which to show the menu (coordinates are page-based)
     * @param {Ext.menu.Menu} parentMenu (optional) This menu's parent menu, if applicable (defaults to undefined)
     */
    showAt : function(xy, parentMenu){
        if(this.fireEvent('beforeshow', this) !== false){
            this.parentMenu = parentMenu;
            if(!this.el){
                this.render();
            }
            if(this.enableScrolling){
                // set the position so we can figure out the constrain value.
                this.el.setXY(xy);
                //constrain the value, keep the y coordinate the same
                xy[1] = this.constrainScroll(xy[1]);
                xy = [this.el.adjustForConstraints(xy)[0], xy[1]];
            }else{
                //constrain to the viewport.
                xy = this.el.adjustForConstraints(xy);
            }
            this.el.setXY(xy);
            this.el.show();
            Ext.menu.Menu.superclass.onShow.call(this);
            if(Ext.isIE9m){
                // internal event, used so we don't couple the layout to the menu
                this.fireEvent('autosize', this);
                if(!Ext.isIE8){
                    this.el.repaint();
                }
            }
            this.hidden = false;
            this.focus();
            this.fireEvent('show', this);
        }
    },

<span id='Ext-menu-Menu-method-constrainScroll'>    constrainScroll : function(y){
</span>        var max, full = this.ul.setHeight('auto').getHeight(),
            returnY = y, normalY, parentEl, scrollTop, viewHeight;
        if(this.floating){
            parentEl = Ext.fly(this.el.dom.parentNode);
            scrollTop = parentEl.getScroll().top;
            viewHeight = parentEl.getViewSize().height;
            //Normalize y by the scroll position for the parent element.  Need to move it into the coordinate space
            //of the view.
            normalY = y - scrollTop;
            max = this.maxHeight ? this.maxHeight : viewHeight - normalY;
            if(full &gt; viewHeight) {
                max = viewHeight;
                //Set returnY equal to (0,0) in view space by reducing y by the value of normalY
                returnY = y - normalY;
            } else if(max &lt; full) {
                returnY = y - (full - max);
                max = full;
            }
        }else{
            max = this.getHeight();
        }
        // Always respect maxHeight 
        if (this.maxHeight){
            max = Math.min(this.maxHeight, max);
        }
        if(full &gt; max &amp;&amp; max &gt; 0){
            this.activeMax = max - this.scrollerHeight * 2 - this.el.getFrameWidth('tb') - Ext.num(this.el.shadowOffset, 0);
            this.ul.setHeight(this.activeMax);
            this.createScrollers();
            this.el.select('.x-menu-scroller').setDisplayed('');
        }else{
            this.ul.setHeight(full);
            this.el.select('.x-menu-scroller').setDisplayed('none');
        }
        this.ul.dom.scrollTop = 0;
        return returnY;
    },

<span id='Ext-menu-Menu-method-createScrollers'>    createScrollers : function(){
</span>        if(!this.scroller){
            this.scroller = {
                pos: 0,
                top: this.el.insertFirst({
                    tag: 'div',
                    cls: 'x-menu-scroller x-menu-scroller-top',
                    html: '&amp;#160;'
                }),
                bottom: this.el.createChild({
                    tag: 'div',
                    cls: 'x-menu-scroller x-menu-scroller-bottom',
                    html: '&amp;#160;'
                })
            };
            this.scroller.top.hover(this.onScrollerIn, this.onScrollerOut, this);
            this.scroller.topRepeater = new Ext.util.ClickRepeater(this.scroller.top, {
                listeners: {
                    click: this.onScroll.createDelegate(this, [null, this.scroller.top], false)
                }
            });
            this.scroller.bottom.hover(this.onScrollerIn, this.onScrollerOut, this);
            this.scroller.bottomRepeater = new Ext.util.ClickRepeater(this.scroller.bottom, {
                listeners: {
                    click: this.onScroll.createDelegate(this, [null, this.scroller.bottom], false)
                }
            });
        }
    },

<span id='Ext-menu-Menu-method-onLayout'>    onLayout : function(){
</span>        if(this.isVisible()){
            if(this.enableScrolling){
                this.constrainScroll(this.el.getTop());
            }
            if(this.floating){
                this.el.sync();
            }
        }
    },

<span id='Ext-menu-Menu-method-focus'>    focus : function(){
</span>        if(!this.hidden){
            this.doFocus.defer(50, this);
        }
    },

<span id='Ext-menu-Menu-method-doFocus'>    doFocus : function(){
</span>        if(!this.hidden){
            this.focusEl.focus();
        }
    },

<span id='Ext-menu-Menu-method-hide'>    /**
</span>     * Hides this menu and optionally all parent menus
     * @param {Boolean} deep (optional) True to hide all parent menus recursively, if any (defaults to false)
     */
    hide : function(deep){
        if (!this.isDestroyed) {
            this.deepHide = deep;
            Ext.menu.Menu.superclass.hide.call(this);
            delete this.deepHide;
        }
    },

<span id='Ext-menu-Menu-method-onHide'>    // private
</span>    onHide : function(){
        Ext.menu.Menu.superclass.onHide.call(this);
        this.deactivateActive();
        if(this.el &amp;&amp; this.floating){
            this.el.hide();
        }
        var pm = this.parentMenu;
        if(this.deepHide === true &amp;&amp; pm){
            if(pm.floating){
                pm.hide(true);
            }else{
                pm.deactivateActive();
            }
        }
    },

<span id='Ext-menu-Menu-method-lookupComponent'>    // private
</span>    lookupComponent : function(c){
         if(Ext.isString(c)){
            c = (c == 'separator' || c == '-') ? new Ext.menu.Separator() : new Ext.menu.TextItem(c);
             this.applyDefaults(c);
         }else{
            if(Ext.isObject(c)){
                c = this.getMenuItem(c);
            }else if(c.tagName || c.el){ // element. Wrap it.
                c = new Ext.BoxComponent({
                    el: c
                });
            }
         }
         return c;
    },

<span id='Ext-menu-Menu-method-applyDefaults'>    applyDefaults : function(c) {
</span>        if (!Ext.isString(c)) {
            c = Ext.menu.Menu.superclass.applyDefaults.call(this, c);
            var d = this.internalDefaults;
            if(d){
                if(c.events){
                    Ext.applyIf(c.initialConfig, d);
                    Ext.apply(c, d);
                }else{
                    Ext.applyIf(c, d);
                }
            }
        }
        return c;
    },

<span id='Ext-menu-Menu-method-getMenuItem'>    // private
</span>    getMenuItem : function(config) {
        config.ownerCt = this;
        
        if (!config.isXType) {
            if (!config.xtype &amp;&amp; Ext.isBoolean(config.checked)) {
                return new Ext.menu.CheckItem(config);
            }
            return Ext.create(config, this.defaultType);
        }
        return config;
    },

<span id='Ext-menu-Menu-method-addSeparator'>    /**
</span>     * Adds a separator bar to the menu
     * @return {Ext.menu.Item} The menu item that was added
     */
    addSeparator : function() {
        return this.add(new Ext.menu.Separator());
    },

<span id='Ext-menu-Menu-method-addElement'>    /**
</span>     * Adds an {@link Ext.Element} object to the menu
     * @param {Mixed} el The element or DOM node to add, or its id
     * @return {Ext.menu.Item} The menu item that was added
     */
    addElement : function(el) {
        return this.add(new Ext.menu.BaseItem({
            el: el
        }));
    },

<span id='Ext-menu-Menu-method-addItem'>    /**
</span>     * Adds an existing object based on {@link Ext.menu.BaseItem} to the menu
     * @param {Ext.menu.Item} item The menu item to add
     * @return {Ext.menu.Item} The menu item that was added
     */
    addItem : function(item) {
        return this.add(item);
    },

<span id='Ext-menu-Menu-method-addMenuItem'>    /**
</span>     * Creates a new {@link Ext.menu.Item} based an the supplied config object and adds it to the menu
     * @param {Object} config A MenuItem config object
     * @return {Ext.menu.Item} The menu item that was added
     */
    addMenuItem : function(config) {
        return this.add(this.getMenuItem(config));
    },

<span id='Ext-menu-Menu-method-addText'>    /**
</span>     * Creates a new {@link Ext.menu.TextItem} with the supplied text and adds it to the menu
     * @param {String} text The text to display in the menu item
     * @return {Ext.menu.Item} The menu item that was added
     */
    addText : function(text){
        return this.add(new Ext.menu.TextItem(text));
    },

<span id='Ext-menu-Menu-method-onDestroy'>    //private
</span>    onDestroy : function(){
        Ext.EventManager.removeResizeListener(this.hide, this);
        var pm = this.parentMenu;
        if(pm &amp;&amp; pm.activeChild == this){
            delete pm.activeChild;
        }
        delete this.parentMenu;
        Ext.menu.Menu.superclass.onDestroy.call(this);
        Ext.menu.MenuMgr.unregister(this);
        if(this.keyNav) {
            this.keyNav.disable();
        }
        var s = this.scroller;
        if(s){
            Ext.destroy(s.topRepeater, s.bottomRepeater, s.top, s.bottom);
        }
        Ext.destroy(
            this.el,
            this.focusEl,
            this.ul
        );
    }
});

Ext.reg('menu', Ext.menu.Menu);

// MenuNav is a private utility class used internally by the Menu
Ext.menu.MenuNav = Ext.extend(Ext.KeyNav, function(){
    function up(e, m){
        if(!m.tryActivate(m.items.indexOf(m.activeItem)-1, -1)){
            m.tryActivate(m.items.length-1, -1);
        }
    }
    function down(e, m){
        if(!m.tryActivate(m.items.indexOf(m.activeItem)+1, 1)){
            m.tryActivate(0, 1);
        }
    }
    return {
        constructor : function(menu){
            Ext.menu.MenuNav.superclass.constructor.call(this, menu.el);
            this.scope = this.menu = menu;
        },

        doRelay : function(e, h){
            var k = e.getKey();
//          Keystrokes within a form Field (e.g.: down in a Combo) do not navigate. Allow only TAB
            if (this.menu.activeItem &amp;&amp; this.menu.activeItem.isFormField &amp;&amp; k != e.TAB) {
                return false;
            }
            if(!this.menu.activeItem &amp;&amp; e.isNavKeyPress() &amp;&amp; k != e.SPACE &amp;&amp; k != e.RETURN){
                this.menu.tryActivate(0, 1);
                return false;
            }
            return h.call(this.scope || this, e, this.menu);
        },

        tab: function(e, m) {
            e.stopEvent();
            if (e.shiftKey) {
                up(e, m);
            } else {
                down(e, m);
            }
        },

        up : up,

        down : down,

        right : function(e, m){
            if(m.activeItem){
                m.activeItem.expandMenu(true);
            }
        },

        left : function(e, m){
            m.hide();
            if(m.parentMenu &amp;&amp; m.parentMenu.activeItem){
                m.parentMenu.activeItem.activate();
            }
        },

        enter : function(e, m){
            if(m.activeItem){
                e.stopPropagation();
                m.activeItem.onClick(e);
                m.fireEvent('click', this, m.activeItem);
                return true;
            }
        }
    };
}());
</pre>
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